U.S. Secretary of State Rex Tillerson lays a wreath during a ceremony at the Warsaw Ghetto Uprising 1943 memorial marking the International Holocaust Remembrance Day, in Warsaw, Poland.(Photo: Czarek Sokolowski, AP Images)

WARSAW, Poland — German Chancellor Angela Merkel has warned that anti-Semitism is on the rise in her country as political leaders, Holocaust survivors and others mark International Holocaust Remembrance Day.

In a weekly podcast Saturday, she called it “incomprehensible and a disgrace that no Jewish institution can exist without police security – whether it is a school, a kindergarten or a synagogue.”

In Warsaw, Poland, U.S. Secretary of State Rex Tillerson took part in a wreath-laying ceremony at a memorial to the Warsaw Ghetto Uprising of 1943.

Commemorations will also be held later Saturday to mark the 73rd anniversary of the liberation of Auschwitz.